The First Regiment Armory Annex, commonly known as the Portland Armory Building, at 128 NW 11th Avenue. The building was renovated from 2002 to 2006 (to LEED Platinum certification) and now houses the Gerding Theater, used primarily by the theatre group Portland Center Stage. The adjacent Vera Katz Sidewalk Park, or Sliver Park, includes a bioswale for stormwater treatment and a water channel of sculpted black basalt. The water feature design, by Scott Murase of landscape architect firm Murase Associates, is part of the building's storm water management and is fed by roof runoff.